Apparatus for automatically controlling the speed of trains.



J. G. SCHREUDEB. L V. K. SPICER. APPARATUS FOR AUTOMATIGALLY CONTROLLING THB SPEED of TRAINS. 1 l APPLIATION :FILED AUG. 3, 1907. 9 1 2,897

Patented Feb. 16, 190.9.

WITNESSES .lli-desire to include all 2j) automatically stop, the trein.

5 eifect'the 'operation of c controlling valve or onirico sfrliirn's rlifrnnr onine 'LIENS G.-SCHBEUDER, OF

EDGEWOO'D PARK, PENNSYLVANIA, AXD VIBF K. SPlCIR. OF CHI y(GAGG. ILLNIS, ASSIGNORS TO THE UNION SWITCH & SIGNAL COMPANY, OF SWISSVALE,

PENNSXLVANIA, .i

CORPORATIQN OIF, PENNSYLVANIA.

AEPAIRATUSEOR, AUTMATICALLY ONTROLLN THE SPEED OF TRAINS.

No Qlfiy Application` filed Augut 3,

Specicotion of Letters Potent.

Patented Feb. 1e, ieee. 19o?. semi NQ. 385,934.'

To @ZZ-whom@ lmay conce-m: l Be 1t known thet'we, Jens G. Sernin-conn, deny county., Pennof EdgewoodV Perk, y

lyon 1a.,'end Vio l oel; couiity, Illinois,

Spione', of Chicago, l have invented fr new l lor Automatically; Controlling the Speed of Trains, o which thc l following is :i full, clear, and 'cx-ict deseripl tion', in wl'iich the ligure shows :i ,lizigrnln l l l l l ,i andJ useful Apparatus metio view illustrating; our invention.

'l The object of our invention is to provide ineens for nntomcl'icully con i rolling the "Speed of railway trains, (and by thc tcrin l train is used herein :ind 1n the chnins, we

forms of engines' end' Y" hiclcs, whether lsingle or litterliefl), in I (listelli. signls, it cinrcs, or :it any 'other point'- nlohejthc right o' Where l it he desired 'to' limit the spoed AIn accordance with our invention, wc provide a cooperating trip ineclninisni cerricil inv part by the trein, and located partly :along the .trackwny, und. which is arrange/.il :o

der which is connected by n pipe 3 with er;

3,25 piped which leeds to the innin oir 'llink on the enginc. Communication between thcl pipe 3 and the cylinder 2 is normally prcf vented by e Valve 5, which is .fn'rcngcd to be unsectcd by ineens of :in clectro-nmg'net 6. l 4 0 In the cylinder 2 is :i piston 7, whose downl Ward-nioyement is resister by ineens oi" o spring 8. Connected to seid piston is :i rod 9 tothe lower end ol" which is ,iivotnlly connected n tripy znm lll, designed when in the position shown in full lines iii thc ligure to Contact with a trip erin 1]. on thc tinck; 12

is n.' link, 'one end ol which is pivoted on the "lixedpin 13, and the other end of which is connected to the )iston rod 9 ou the same' l center 14 about w ich the trip erm or linger l() is pivoted. Said trip erin or linger is provided with 'a curved tail portion 15, which-is designed to engage with a projection 1G on .the lower end of the cylinder for the purupper dotted position shown. Suid erin or fling-cr :ilse carries u. Contact. 17, which is nrranged to close the circo it between the two contacts 18 when the sind erin or iingcr is inovod by engagement with the tiip lllinto thc positini shown by the lower dotted lines.

lle circuit ol the Iinignct o is carried through the zirnnltnrc lll on nu electro-inegnct El), which is included in the circuit of a generator 21 driven by a belt 22, orv other suitable connor-tion, with :in iixlo 23 of the engine or trein.` When the electro-magnet i 2 l is energized to close the armature 19, thc

coil ol moe-ncl, connected in parallel witl tl coil ol tlfy magnet 20.

-V gueles the air brake pipe of the train having :in csi-apc valve "21 which "molly hold closed by the diaphragm' chamber 25 which is connected through o pipe 2S loading to the pipe :i 'valve 37 with connection l to tho nnu'n oir trink. veli/c is norinelly closed und is arranged to lic opened by nn electro-niagnct 29, whose circuit is completed through thc contacts 17 und l luciole de. willed.

The oiiererioe is us follows:--l`l1e resist since of the nizw it coils 20, or ci' thelinc in which sold coil is included, is'so designed or proportioned 'that said coil will uotjbc encrcu/.cd rniliriontlj: lo attract the lnnifitiirc`l9 by vollngc encriilcd, except when the speed es the prcdetcrininini limit.

lli-.cn this occurs, the armut-nrc :a l il) is closed, thereby closing thc circuit of the magnet 6, which opens the vulve 5 to admit nir from the pipes 3 and l to the cylinder 2. This forces the piston 7 downwurdly :nld moves the trip l() into the operative position. shown in lull lines, ready for.engagement with 'the next trip ll 'on the truck. vhen this engagement is inode, thc erin or linger l() is niovcdto close thc circuit between the contacts 18, which thereby cncrgizcs the magnet Q9-, opens the valve 27, and :ilso the valve 24 t0 exhaust. cirv from thepipe 24 to slow the train or stop it. When the trein has slowed down to the'desircd speed, the elec'- tro-tmotive force ofthe'dynarno' 21 drops to such en' extent' as to cause' the 'rnagg'net'QO to This' breaks 'the cir,- cuit of the magnet 6 and closes the Valve 5, which allows oir to exhaust from the cylinder J The spring' now returns the piston 7 to pose ol holding` seid 4erin orl linger in the' 5 and out of engaging position, as indicated, by

-other esired mechanism by which the speed of the train may be controlled.

rThe track tips ll may be connected with the signal mechanism, so as to be moved into the position oi the signals as described and claimed in our application, Serial No. 386,932, of even date herewith. rl'his Would be the case'where it was desired to check the speed of a train in passing a distant signal set at caution. ln such case the movement of the distantsignal to its caution position would move the trip 1l toits set position. y rlhe trips l1 may, however', bc permanently secured to the track at any place where it is desired to control the s eed, or they 'may betemporarily clamped to t e rail in the case of an emergency.

It will be obvious that various forms of mechanism may'bedevisedwhieh Will be Within the scope of our invention a's defined by the claims, and that instead of using air in the cylinder 2 any other suitable lluid pressure may be employed. l

W hat we claim is 1- l. In apparatus for controlling the speed of trains, a trip device, mechanism for moving the same into operative position, and an electro-magnetic device controlled by the speed of the train for controlling the operation of said mechanism; substantially as described.

2. In apparatus for controlling the speed of trains, a trip device, iluidv ressure means for movingr the same into am out of operating position, and an electro-magnetic device cont-rolled bythe speed of the train for controlling the operation of the fluid pressure means; substantially as described.

, 3. In apparatus for Acontrolling the speed.

of trains, a normally closed control valve, electro-Huid-pressure means for o )ening said valve, a trio device controlling tlie operation ol' the electro-iluid-pressure means, and an elcctro-[luid-pressure control device for controlling the operative position of the trip mechanism; substantially as described.

4. In apparatus for controlling the speed of' trains, a trip device, a pressure cylinder for moving the same into and out of operative position, an electro-magnet for controlling the admission of pressure to said cylinder, means dependent upon the speed of the train for controlling the energlzation of the eraser magnet, a controlling valve, and means op erated by the trip for effecting the operation of Said valve; substantially as described.

5. In apparatus for controlling the speed of trains, a control valve, a magnet for operating the same, a trip device for controlling the circuit of the magnet, and means controlled by the speed of the train for moving the trip device into and out of operative position; substantially as described.

6. In apparatus for controlling the speed of trains, a generator driven by the train, a trip device, electro-magnetic means included in the circuit of the generator for controlling the position of the trip device, and speed controlling means operated by the trip device; substantially as described.

7. In apparatus for controlling the speed of trains, a generator driven by the train, a vertically movable trip device, electro-magnetic means included in the circuit of the generator for controlling the osition of the trip device, and Speed-control ing means operated by the trip device; substantially as described.

8. In an apparatus for controlling trains, the combination of an arm movably connected to a car, a trip arranged on the track, means operative by electrical`e'ii`ects produced by the rotation of a wheel oi" the train forcontrolling the movement of the arm.

9. In an apparatus for controlling trains, the combination of an arm movably connected to a car, a trip arranged on the track, means for shifting the arm, and means operative by a wheel of the train for generating electrical effects controlling the arm shitting means.

10. In an apparatus for controlling trains,

the combination ofan arm movably con'- nected to a car, a trip arranged on the track, mechanism for moving the arm, electrically controlled means for controlling said mechanism, and means for varying the operative value of thc current in such controlling means, in accordance with variations in the speed of the train.

11, ln an apparatus for controlling trains, the combination of a trip arranged on the track, an arm movably connected toA a car, electrically controlled means for movin@Y the arm, and an electric generator operated by a wheel of the car and included in the controlling circuit ol'l the arm moving means.

In testimony whereof, We have hereunto set our hands. l

JENS G. SCHREUDER. VIBE K. SPlCER. Witnesses as to Jens G. Schreuder: JAS. JonNsoN, i C. C. rn'rn. Witnesses as to Vibe K. Spicer:

E. T. BARNES, W. M. VANDEnsLUrs.

lli) 

